Tool for pyrographic work.



PATENTBD MAY 5, 1903.

- Z N. TYSSOWSKA.

TOOL FOR PYROGRAPHIO WORK.

APPLIOATION rum:- NOV. 20, 1902. 10 MODEL. 2 BHEETSSHEET 1 7? z'nasses: In ventor z. TKSSOLVSKA. 7% By A15 #3.. I I I n.

T noams Fergus co, word-Luna, WASHINGTON 0 c PAVTENTED MAY 5,1903. Z. N. TYSSOWSKA. TOOL FOR PYROGRAPHIG WORK.

no MODEL.

' APPLICATION FILED NOV. 20, 1902.

2 SHEETS-SHEET 2'.

Wressgs:

Inventor I Z. /V TISSOWGKA Patented May 5, 1903 ATENT FFICE.

ZELL NIVER TYSSOWSKA,.OF CHICAGO, ILLINOIS, ASSIGNOR To J. GORIIAM TYSSOWSKI, OF CHICAGO, ILLINOIS.

TOOL FOR PYROGRAPHIC WORK.

SPECIFICATION formingpart of Iietters Patent No. 727,034, dated May 5, 1903.

Application filed November 20, 1902. Serial No. 132,160. (No model.)

To all whom, it may concern: 1

Be it known that I, ZELL NIVER TYssoW SKA, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Tools for Pyrographic Work, of which the following is a specification.

Myinvention relates to improvements in [0 tools for pyrographic work in which a hollow platinum point is maintained at a continuous red heat by the combustion of a current of carbureted air, by which I mean air carrying hydrogen or any hydrocarbon, which is made to pass through the instrument. Hitherto it has been the practice to allow the products of combustion in the form of heated gases to issue uselessly through an orifice in the side of the instrument.

The objects of my invention are, first,.to provide means by which the current of hot gases issuing from the tool may be kept at a high temperature and utilized for burning and scorching purposes in artistic delineation; second, to provide means for projecting the hot gases in a stream and'precisely indicating the direction of this stream and concentrating it upon the work, and, third, to provideasimple, cheap, and easily-constructed device which shall embody the foregoing principles.

In the accompanying drawings, Figure 1 is a view showing generally the method of using my device. Fig. 2'is a side elevation of a pyrographic tool with my invention applied thereto. Fig. 3 is another side view of the nozzle shown in Fig. 2. Fig. 4 is a perspective view of same. Fig. 5 is a side elevation showing another form of my invention.

Fig. 6 is a perspective view of another form. Figs. 7, 8, and 10 show in elevation, section, and perspective Views, respectively, another form of my invention. Fig.9 is a still fur ther modification.

A denotes an ordinary pyrographic tool with a heatable end A, adapted to produce by burning various ornamental and useful effects. In place of the usual hole for the exit of hot gases I provide a tube or nozzle B B B 13 B with a suitable delivery-orifice e e e 6 e, which projects the hot gases in a straight fine stream in such a way that they can be used for producing useful efiects. For this purpose the delivery-nozzle must have a fine issuing-channel at is delivery end and is preferably made tapering at its inlet of the form shown in Figs. 5, 6, 7, 8, and 10. The form of the tube or nozzle, furthermore, precisely indicates the direction of the projected gases. The stream of course extends in a line along the axis'of the nozzle, so that its direction can be precisely controlled. I have shown this nozzle at right angles to the body of the instrument; but it may obviously extend in any direction.

In the form shown in Figs. 2, 3, and 4. the tube or nozzle 13 is provided with two cars or lugs c c, which are adapted to be bent around the body of the tool A and there secured by a screw or rivet d or soldering or by twisting the ears together or by other means.

In Fig. 5 is shown a form where the tube or nozzle is integral with or soldered to the body of the py'rographic tool.

In Fig. 6 the ears or lugs c c are of slightlymodified form and are adapted to firmly inclose the body A of the tool by their own elasticity, or these ends may be soldered or otherwise fastened, ifdesired.

In Figs. 7,8, and 10 I show a form particn- 8o larly adapted to be turned out on a turretlathe. This has the usual hole A for the body of the tool and a nozzle portion 13 The nozzle-hole f is drilled through an aperture 9 for this purpose in the stock 0 of the nozzle.

In Fig. 9 is shown a form easily attached to any tool. It is madein two halves h h, held together by ringsqlt". The lower portion of the tube or nozzle B is not split, but integral with the half 77., in order that there may be no way for the gases to escape.

By means of my invention theheated gases which would otherwise be wasted, which issue from any pyrographic tool in operation, are now utilized for a special and useful purpose, which could not otherwise be attained. Furthermore, the device is very inexpensive and at the same time does all the work of two special tools now employed. Furthermore, great added convenience is secured by hav- IOO ing the two tools combined in one to admit of conjoint use, as any operator skilled in the art will appreciate.

I am aware that scorching devices and burning-tools are separately old, and I do not claim the mere combination of these two; but what I do claim, broadly, is a device for the utilization of the heated gases from the one for the operation of the other all combined in a single tool. Such utilization would not be possible without my device, since in order to secure a proper effect the hot gases must be delivered in a fine stream and projected in a direction precisely indicated to the operator. I am not claiming the mere utilization of the hot gases from a pyrographic tool. A device embodying the principles of my invention is necessary for the purposes indicated.

In defining and distinguishing this device more clearly I would state that I am aware that a thermocauter has been provided with a discharge-pipe at the side for the gases of combustion,which discharge-pipe was of such larger cross-sectional area in relation to the preceding channel through which it receives the gases as to give ready clearance and free discharge for the products of combustion, there being neither any intent to utilize said escaping gases nor any construction which would permit them to be used for the purposes of my invention. The reason for this is as follows: Where the hot gases of combustion issue through a discharge-pipe which is larger than the cross-sectional area of either the combustion-chamber or the outlet therefrom, there is a rapid expansion of these gases at the point of final issue corresponding to the increased area and which, according to well-known physical principles, involves a rapid and pronounced lowering of temperature to such a point that ascorching effect could not be obtained, nor could there be such concentration of the jet as to properly trace lines or limited areas in artistic delineation. In my invention the size of the duct or channel-way in the nozzle must be very small or fine in relation to the outlet from the combustion-chain her or the combustion-chamber itself, so that there shall be maintained up to the point of final issue, and even beyond it, a proper compression and concentration of the hot gases, so as to maintain, conserve, and utilize their scorching temperature, without which no useful effect can be obtained. This elfect is perfectly attained in my laterally-projecting concentrating-nozzle, and while I prefer the tapering duct within the same smallest at the outer end I do not confine myself to this tapering form of duct or passage-way, it being only important that the issuing-orifice itself should be of such limited cross-section as to maintain the compression of the gases and their scorching temperature and at the same time so concentrate the energy of the fine hot escaping stream as to give it localization for purposes of delineation and with the tool at a distance from the work far enough away to enable the operator to see the work while it is in progress of execution.

It is to be distinctly understood that while I have described various preferred forms of my invention I do not limit myself thereby in any way, but consider as falling within my invention any structure which may be included within the scope of the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a tool for pyrographic work, the combination of a pyrographic point having an aperture in the wall thereof, a nozzle formed on or attached to the said tool, the said nozzle having a small channel communicating with the said aperture, said channel being tapering or cone-shaped, whereby the gases from the tool are projected with precision, and their direction precisely indicated, substantially as specified.

2. In a device of the character described, the combination of a pyrographic tool having an aperture in the wall thereof, a nozzle having a small channel communicating with the said aperture, said channel being larger at the inlet than at the exit, whereby a smooth, hot, fine jet is projected with precision and its direction precisely indicated, substantially as described.

3. A tool for pyrographic work, comprising a combined pyrographic point and a scorcher, said pyrographic point consisting of a hollow pointed instrument adapted to be brought into direct contact with the material operated on, and having an interior combustionchamber by which it may be heated to incandescence, and said scorcher consisting of a nozzle having a passage-way through it of such limited cross-section as to maintain the pressure and temperature of the escaping gases, whereby a hot fine jet of escaping gases, at charring temperature, from the combustion-chamber may be projected with precision, substantially as described.

In testimony whereof I have affixed my signature in presence of two witnesses.

ZELL NIVER TYSSOVVSKA;

tVitnesses:

FREDERICK PETER MCINTOSH, JosErH GORHAM TYssowsKL 

